METHOD FOR RECOVERING VALUABLE MATERIALS FROM BATTERIES
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United States of America Patent
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Jan 23, 2025
app pub date -
Jul 20, 2023
filing date -
Jul 20, 2023
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Abstract
A method of recycling batteries includes steps of: shredding the batteries to generate a shredded battery feed material, wetting the shredded battery feed material with an ammonia carbonate lixiviant to generate a slurry, separating the battery feed material in the slurry into a relatively light fraction material slurry and a relatively heavy fraction material slurry, processing the relatively light fraction material slurry in a first counter current ammoniacal leaching and decanting circuit to produce a first pregnant leaching solution including a soluble lithium (Li) component, and processing the relatively heavy fraction material slurry in a second counter current ammoniacal leaching and decanting circuit to produce a second pregnant leaching solution including, if present in the batteries, soluble nickel (Ni), cobalt (Co), zinc (Zn) and copper (Cu) components and insoluble graphite, iron (Fe), aluminum (Al), manganese (Mn) and rare earth element (REEs) components
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